Stormwater chamber



FIG. 1 is a front, top and left side isometric view of a stormwater chamber in accordance with the new design;

FIG. 2 is a rear elevation view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof. 

CLAIM The ornamental design for a stormwater chamber, as shown and described. 